Elastic rim



Aug. 1923.

L. CARLBERG ER ELASTIC RIM Filed Sept. 5. 1922 2 Sheets-Sheet 1 L.CARLBERGER ELASTIC RIM 2 Sheets-Sheet, 2

Filed Sept. 5, 1922 Patented 2%, i923.

Fri J v i nnnsrro aria."

Application filed September T 0 all whom it may concern:

Be it known that I Lno CARLnnRcnn mechanical engineer, a citizen of theRepublic of Austria, residing at Modling, in the Republic of Austria,have invented certain new and useful Improvements in ,Elastic Rims, ofwhich the following is a specification.

This invention relates to elastic rims for carriage-wheels andsubstantially consists of a hollow cushion or buffer of elastic materialand a polygonal frame enclosing the same and capable of being flattenedor eX- panded within the plane of the wheel. When pressure is exerted onthe polygonal frame the angles between the sides of the polygons arealtered and the pressure is transmitted to the hollow buffers which aredeformed in such a way, that the transmission of the pressure unto thehollow buffer is effected from the point of pressure and the oppositepoint of the polygonal frame with decreasing power on both sides.

In the accompanying drawing Fig. 1 diagrammatically shows a partial sideview of an elastic rim according to the invention. Fig. 2 shows apartial sideview of a modification of the construction shown in Fig. 1.Fig. 3 is a section on the line A-B of Fig. 2 and Fig. 4 shows apolygonal frame in plan view.

On the periphery of the rim a, perforated rubber cylinders b arearranged at intervals and each is enclosed by a polygonal frame capableof being flattened or expanded in the plane of the wheel. The said frameconsists of hingebands 'd mounted on bolts 0. The whole series ofpolygonal frames are enclosed by a second rim 0 concentrically arrangedto the first and are connected with said rims e and a by means of two ofthe bolts 0. which are inserted into the edge flanges e and a of therims. Lugs 'd projecting from the polygonal frame prevent longitudinalsliding of the rubber cylinder Z) within the frame.

When the wheel is under load the polygo' nal frame with inserted bufferwhich is at the lowest point of the wheelis compressed vertically, whilethe polygonal frame just opposite is stretched. On the intermediateframes a gradually increasing vertical compression andgraduallyincreasing stretching action will take place in accordance with theirrelative position'with respect to the vertical.

The pressure is transmitted to the hollow rubber cylinders and effects acorresponding alteration of form of them.

What I claim is:

1. A wheel of the character described comprisingan inner rim, an outerrim, a plurality of independent spacing devices interposed between therims and spacedapart, each device comprising an endless series ofarticulated links, and yielding cylindrical expansion members surroundedby said lin rs.

2. A. wheel of the character described comi prising an inner rim, anouter rim, a plurality of spacing devices independent of one anotherinterposed between the rims and spaced apart, each device comprising aseries of plates, pins pivotally connecting said plates together. pinsconnecting some of the plates to the rims, and yielding cylindrical Vbuffers having a central perforation surrounded by the plates. I

3. A wheel of the character described, comprising an inner rim, an outerrim. a plurality of spacing devices interposed between the rims andspaced apart, each device comprising a. series of plates. pins pivotallycon necting said plates together, pins connecting some of the plates tothe rims. yielding cylindrical buffers surrounded by the plates, andmeans to prevent axial movement of the buffers.

4. A wheel of the character described, comprising an inner rim havingoutwardly extending lateral flanges. an outer rim'having inwardlyextending lateral flanges, spacing devices interposed between the rimsand flanges, each device comprising an .endless series of pivotallyconnected plates pivotally connected to the side flanges. and a yieldingcylindrical buffer mounted within each series of plates.

5. A wheel of the character described, comprising an inner rim havingoutwardly extending lateral flanges, an outer rim havmg inwardlyextending lateral flanges, spacing devices interposed between the rimsand flanges. each. device comprising an endless series of pivotallyconnected plates pivotally connected to the side flanges. a yieldingcylindrical bufier mounted within each series of plates, and laterallyarranged lugs on the plates to prevent axial movement of the 6. A Wheelof the character described comprising an inner rim having outwardly pr0-jecting lateral flanges, a rim surrounding the latter having inwardlyprojecting lateral flanges, a plurality of spacing devices interposedbetween the rims and flanges, each device comprising an endless seriesof flat plates, pins pivotally .connectingithe plates together, pinspivotally connecting the w plates to the flanges, a yielding cylindricaland lateral lugs on the reeaaoe buffer mounted ithin each series ofplates,

ends of the bufiers. I V

'Z. A rim spacer for resilient Wheels, comprising a polygonalarticulated frame, and a resilient core mounted Within the latter.

In testimony whereof I aifix my signature in presence of two Witnesses.

LEO CARLBERGER.

lVitnesses: p CARL LQUDENBURG,

CARL LITBEKEK.

plates engaging the 7

